* {
    margin: 0;
    padding: 0;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    cursor: default;
    overflow: hidden;
}
.mainframe {
    left: 20%;
    top: 18%;
    position: fixed;
    height: 310px;
    width: 260px;
    border: 2px ridge #ff6600;
    background: url("Spilled_coffee_texture_1.jpg");
    background-size: 260px 320px;
    background-repeat: no-repeat;
    -webkit-box-shadow: 3px 6px 4px #660033;
    -moz-box-shadow: 3px 6px 4px #660033;
    box-shadow: 3px 6px 4px #660033;
    border-radius: 15%;
    z-index: 11;
}
.keys {
    position: absolute;
    top: 70px;
    left: 7px;
    border: 2px inset #F8C128;
    width: 247px;
    border-left: none;
    border-right: none;
    border-bottom: none;
}
.numbers, .operation, .point {
    position: relative;
    border: 1px inset lightgrey;
    text-align: center;
    margin-left: 5px;
    margin-top: 8px;
    width: 50px;
    display: inline-block;
    font-size: 40px;
    background-color: #cc9966;
    border-radius: 15%;
    -webkit-box-shadow: 3px 6px 4px brown;
    -moz-box-shadow: 3px 6px 4px brown;
    box-shadow: 3px 6px 4px brown;
    font-family: OCR A Extended;
    opacity: 0.85;
}
.operation {
    background-color: #cc9900;
    -webkit-box-shadow: 3px 6px 4px #cc9966;
    -moz-box-shadow: 3px 6px 4px #cc9966;
    box-shadow: 3px 6px 4px #cc9966;
}
.numbers:hover, .operation:hover, .point:hover, .clear:hover {
    background-color: #ff6600;
    color: yellow;
    -webkit-box-shadow: 3px 6px 4px white;
    -moz-box-shadow: 3px 6px 4px white;
    box-shadow: 3px 6px 4px white;
    border-radius: 22%;
    opacity: .96;
}
.numbers:active, .operation:active, .point:active, .clear:active {
    background-color: transparent;
    color: purple;
    font-weight: 900;
    -webkit-box-shadow: 1px 3px 2px white;
    -moz-box-shadow: 1px 3px 2px white;
    box-shadow: 1px 3px 2px white;
    border-radius: 25%;
    opacity: .99;
}
.clear {
    position: relative;
    border: 1px inset lightgrey;
    text-align: center;
    left: 12px;
    top: 23px;
    width: 40px;
    font-size: 30px;
    font-weight: 800;
    background-color: yellow;
    border-radius: 15%;
    -webkit-box-shadow: 3px 6px 4px brown;
    -moz-box-shadow: 3px 6px 4px brown;
    box-shadow: 3px 6px 4px brown;
    font-family: Agency FB;
    opacity: 0.85;
    float: left;
    color: magenta;
}
.screen {
    float: right;
    font-size: 25px;
    color: black;
    width: 185px;
    background-color: lightgrey;
    border: 3px inset lightgrey;
    top: 25px;
    position: relative;
    text-align: right;
    margin-right: 12px;
    overflow: hidden;
    -moz-user-select: text;
    -webkit-user-select: text;
    -ms-user-select: text;
    user-select: text;
    font-family: DigifaceWide;
}
.container{
    background: url(color-explosion-1-200407810.jpg) no-repeat center center;
    background-size: cover;
    color: #fff;
    text-align: center;
    padding: 2em;
    -webkit-text-fill-color: transparent;
    -webkit-background-clip: text;
    font-family: forte;
    font-size: 85px;
    left: 26%;
    position: absolute;
}
img{
    position: absolute;
    height: 150px;
    width: 500px;
    left: 50%;
    display: inline-block;
    top: 11%;
}